[winswitch] Run an application inside an existing network namespace via xpra

[mail at rudisu.li]

Is there a way to remotely start an application inside an existing
namespace via xpra?
E.g. given    xpra start ssh/user at remote-host --start-child=firefox     ->
only firefox would need to run inside a network namespace (as if started
with ip netns exec <namespace-name> firefox).

As expected, running 'ip netns exec ...' as parameter of --start-child
doesn't work (but it doesn't fail either, there's simply no window showing).

Any input would be appreciated!

Best regards
Marco